This is why Kevlishvilli is as cunning as a fox.
11. e1g1  11... e8g8 Once the f-file has been opened, Black's play becomes pretty straightforward. Bring the queen to g6, maneuver the knight to f4, double the rooks along the f-file, and mate the opponent. If this is not enough, start pushing the pawns. 12. f1e1 This is a novelty. 12... d8e8  13. h2h3 Black's play is straightforward, but White certainly has his chances. After safeguarding the kingside, he may start advancing his queenside pawns in order to open the a-file. This process will be facilitated by the doubled b-pawns. A special attention should be paid to the center, as White will be almost always happy to open it with a timely d3-d4.